Q. My Oracle XE installation was working fine, but today I’m getting an error – which read as follows under Ubuntu Linux :
ORA-12154: TNS:could not resolve the connect identifier specified
How do I fix this problem without reinstalling Oracle?
Continue reading “ORA-12154: TNS:could not resolve the connect identifier specified Error and Solution”
Q. How do I change IP address under Ubuntu Linux using GUI and command line options?
Q. I’d like to get more information about my wireless settings stored under CentOS / RHEL / Fedora Linux. Where Does Linux Save Wireless Card Settings?
Q. Recently we made changes to our server hardware and swapped all IP address from old to a new server. However, 2 IP addresses are not get updated due to arp cache issues (IPs are cached on the router). They are going to other servers. How do I solve this problem under Redhat Enterprise Linux version 5.0 or any other Linux distribution?
Continue reading “Router ARP Cache is Not Releasing Linux / UNIX Server IP address”
traceroute tracks the route packets take across an IP network on their way to a given host.